Enum Error 

pub enum Error {
    Help,
    HelpManual {
        name: &'static str,
    },
    Usage,
    WithHint {
        err: Error,
        hint: &'static str,
    },
}

Variants

Help

If this error is returned from argument parsing, help is displayed.

HelpManual

If this error is returned from argument parsing, the manual page is displayed.

Fields

name: &'static str

Usage

If this error is returned from argument parsing, usage is displayed.

WithHint

An error with a hint.

Fields

err: Error

hint: &'static str

Trait Implementations

impl Debug for Error

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for Error

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for Error

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.